The U.S. coal data are collected and prepared for release by the Office of Oil, Gas, and Coal Supply Statistics, U.S. Energy Information Administration (EIA). The data are compiled from the following EIA survey source: Form EIA-7A, "Coal Production and Preparation Report."

Note that data for the most current time periods typically represent preliminary estimates based on samples collected by the surveys. After the end of a calendar year, the estimates are replaced by actual values from a final data collection, except in the case of missing values. The number of missing values (non-responses) are typically minimal. Normally, all data are final by the fall following the data collection year. For example, data for 2012 should be final by the fall of 2013.

For more information concerning EIA's annual coal data collection and estimation, see the individual footnotes in the Annual Coal Report.

https://www.eia.gov/coal/data/browser/#/topic/28?agg=1,0&geo=g0000000000003vu&mktp=o&linechart=COAL.MARKET_PRICE.US-OPM.A&columnchart=COAL.MARKET_PRICE.US-OPM.A~COAL.MARKET_PRICE.APN-OPM.A~COAL.MARKET_PRICE.APC-OPM.A~COAL.MARKET_PRICE.ILL-OPM.A~COAL.MARKET_PRICE.PRB-OPM.A&map=COAL.MARKET_PRICE.US-OPM.A&freq=A&start=2008&end=2021&ctype=columnchart&ltype=pin&rtype=b&maptype=0&rse=0&pin=

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